Hi,
In streams width=whatever only sets the width of the bounding box, the
text still goes until \textwidth. Is this a bug or a feature? A work
around is to use setups:stream:settings, but it is a bit clumsy.
See the differece between the two streams below.
\usemodule[streams]
\definestreamlayer[flash][width=3in]
\definestreamlayer[model][width=3in]
\startsetups streamlayer:flash:settings
\hsize=3in
\stopsetups
\starttext
\startstreamlayer[flash]
\input tufte
\stopstreamlayer
\startstreamlayer[model]
\input tufte
\stopstreamlayer
\framed[sturt=no]{\placestreamlayer[flash]}
\framed[sturt=no]{\placestreamlayer[model]}
\stoptext
Aditya